An experience I had with a seller.

Seems he asked a simple question - "Why is this bothering me?"

Most of us absorb what might be seen as abusive language as a personal affront and respond emotionally to that. If the initial encounter was seen (by the OP) as an altruistic comment to help guide someone to the truth, a nasty response might feel even more hurtful.

I once tried to guide a load of fish to a large vat, using what I thought were helpful hand gestures to the crane operator, only to have him spew a rather nasty string of obscenity-laden insults at me. It was so over the top that although I was a bit hurt by the words, I started laughing. I remember watching him later hose down the deck of his boat, turn off the water - look at it all and say "F*ck the situation". We (up on the dock) started laughing and he got mad all over again. 

I learned there's just no talking to some people. ;)

I appreciate the feedback here. It no longer bothers me, but it certainly did at the time. This seller has 210 transactions with 100% feedback. I would have thought he would at least look into it himself or ask "then who?". As I was not a buyer, he reacted in a way many here might have as well. Posting this, I was not looking for sympathy, but rather understanding, as I was looking to help the seller with ad information. I appreciate those who understand my post. My best to everyone. Always, MrD.

Maybe the guy was just having a bad day. I bought a Voodoo 20 amp PC from the guy with zero issues and he left me a nice review.

some people do not respond well to being "corrected"...no one likes receiving a nasty response...